Select one:
A. f(x)=−4x+12
B. f(x)=3x+2
C. f(x)=x−9
D. f(x)=−5x−1

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?